I’ve just used RC5-2 yesterday on 2 brand new iphone in v4.2.1. Jailnreaked without problem apparently, even id cydia icon was a bit slow to come (only after installation of another app) – BUT – sync with itunes seems to be bugged on both devices. I’ve installed installous + a few official & cracked apps (very common ones) and now itunes seems the sync process never comes to an end – it stays blocked at first step and I have to stop sync on the iphone or remove the cable. Any tought?